How to use ERMs for treasure hunting?

[Klaud]

Here is the data:
[ATTACH]3252[/ATTACH]

Use VUMATE program to display. You will find it on Google.
You need to add d3drm.dll for Vista.
Rename attached file out2.txt to out2.grd
The file was done by Surfer8 adding coordonates on your file.
With Vumate, select File > Open Surfer Ascii grid > Out2.grd > Contour >OK>OK
With left click turn the 3D display

[Tim Williams]

Here's some good info on ground resistivity.

http://www.heritagegeophysics.com/images/lokenote.pdf

[1843]

Thanks Klaud and Tim for your helping!

Best regards,
1843

[1843]

Which one is better for treasure hunting?

1. Twin-probe (C2 P2 remain in fixed position and C1 P1 are mobile)

2. Pole-pole (C1 P1 remain in fixed position and C2 P2 are mobile)

Are they the same?

Kind regards,
1843

[rael]

Hi,

More about electrode arrays found at follow link:

http://www.geomatrix.co.uk/Introduct...istivity_a.pdf
http://www.geomatrix.co.uk/appnotes.htm

Rael

[Tim Williams]

1843 yes they are the same. This method is good for seeing down about 3 feet with the probes set apart at 1 meter. If you open the probes father like 2 meters then the depth will increase.

Tim

[Geophyz]

Which one is better for treasure hunting?

1. Twin-probe (C2 P2 remain in fixed position and C1 P1 are mobile)

2. Pole-pole (C1 P1 remain in fixed position and C2 P2 are mobile)

Are they the same?

Kind regards,
1843

NO...they are not the same.

In the twin-probe method, the fixed probes are spaced VERY CLOSE to each other. Twin probe measures "resistance" in ohms.

In the Pole-pole method, the fixed probes are space VERY FAR from each other (infinity). Pole-pole can measure "resistivity" in Ohm/meters.